Power Systems Protection Handbook英文文獻(xiàn)資料

Power Systems Protection Handbook英文文獻(xiàn)資料

ID:39412877

大小:5.09 MB

頁數(shù):195頁

時(shí)間:2019-07-02

Power Systems Protection Handbook英文文獻(xiàn)資料_第1頁
Power Systems Protection Handbook英文文獻(xiàn)資料_第2頁
Power Systems Protection Handbook英文文獻(xiàn)資料_第3頁
Power Systems Protection Handbook英文文獻(xiàn)資料_第4頁
Power Systems Protection Handbook英文文獻(xiàn)資料_第5頁
資源描述:

《Power Systems Protection Handbook英文文獻(xiàn)資料》由會(huì)員上傳分享,免費(fèi)在線閱讀,更多相關(guān)內(nèi)容在行業(yè)資料-天天文庫

1、ReferenceProtectionHandbookCHAPTER1ThePrinciplesofPower-networkCalculationsByC.H.LACKEY.INTRODUCTIONpointinthecircuittowhichthevoltageisrelated.Eahthereforemeansthevoltageofphase-arelativetoTheuseofcalculator-boardsfortheevaluationofnet?phase-b;Eanmeansthevoltageofphase-ar

2、elativetoworkcurrentsandvoltagesisestablishedpractice,andneutral-noItisessential,ifconfusionistobeavoided,resultsinagreatsavingoftimeascomparedwithdirectthatthenomenclaturedecideduponshallbemostcalculation.Themanipulationofacalculator-boardmayrigorouslyapplied.Ifthisisdone

3、,interphase-voltage?notdemandgreatskillonthepartoftheoperator,orvectors,whichsometimesgivetrouble,becomequiterequireafullknowledgeoftheprinciplesinvolved,butsimple.Therearesixforthethreephases,namelyE.abtheinterpretationoftheresultsandafullrealisationofandEba,EbcandEcb,Eca

4、andEac;andtheseareshownInthenatureoftheproblemtobesolvedanditsfig.2.implicationsdorequireasoundknowledgeofthebasicprinciplesofcalculation.Apartfromthis,acalculator-boardisoftennotavailable,ortheproblemmaybesimpleenoughfordirectsolution.Engineersassociatedwiththedesignandpe

5、rformanceofpower-supplysystemsshouldsoequipthemselvesastobeabletopredictcurrentandvoltagevaluesunderbothnormalandabnormalconditions:aclearunderstandingfen-ofthebasicprinciplesoffault-calculationsisofpara?mountimportanceinthisconnection.Attentionisdevotedheremainlytotheprin

6、ciplesoffault?calculation,butitshouldbeunderstoodthatmanyofthe-----E""principles,suchasthoseofvector-algebraandnetwork?reduction,areequallyapplicabletoload-studies.Fault-calculationshavecometoberegardedastheprerogativeofexperts,andasoperationsrequiringratherexceptionalski

7、ll.ExperienceiswithoutadoubtaEbnnecessaryadjuncttospeed,butnogreatskillormathematicalabilityisnecessaryfortheproperunderstandingandsolutionofmostproblems.Thesubjectwillbeconsideredunderthefollowingfour-headings:Vector-Representation.Vector-AlgebraandImpedance-Notations.Net

8、work-ReductionandtheCalculationofE'a+---

當(dāng)前文檔最多預(yù)覽五頁,下載文檔查看全文

此文檔下載收益歸作者所有

當(dāng)前文檔最多預(yù)覽五頁,下載文檔查看全文
溫馨提示:
1. 部分包含數(shù)學(xué)公式或PPT動(dòng)畫的文件,查看預(yù)覽時(shí)可能會(huì)顯示錯(cuò)亂或異常,文件下載后無此問題,請(qǐng)放心下載。
2. 本文檔由用戶上傳,版權(quán)歸屬用戶,天天文庫負(fù)責(zé)整理代發(fā)布。如果您對(duì)本文檔版權(quán)有爭(zhēng)議請(qǐng)及時(shí)聯(lián)系客服。
3. 下載前請(qǐng)仔細(xì)閱讀文檔內(nèi)容,確認(rèn)文檔內(nèi)容符合您的需求后進(jìn)行下載,若出現(xiàn)內(nèi)容與標(biāo)題不符可向本站投訴處理。
4. 下載文檔時(shí)可能由于網(wǎng)絡(luò)波動(dòng)等原因無法下載或下載錯(cuò)誤,付費(fèi)完成后未能成功下載的用戶請(qǐng)聯(lián)系客服處理。